Paul,
Thanks for reviewing.
On 06/16/2015 01:21 AM, Paul Bolle wrote:
> One question and a few nits follow.
>
> On Mon, 2015-06-15 at 10:07 -0700, York Sun wrote:
>> SI5338 is a programmable clock generator. It has 4 sets of inputs,
>> PLL, multisynth and dividers to make 4 outputs. This driver splits
>> them into multiple clocks to comply with common clock framework.
>>
>> See Documentation/devicetree/bindings/clock/silabs,si5338.txt for
>> details.
>>
>> Signed-off-by: York Sun <york...@freescale.com>
>> CC: Mike Turquette <mturque...@linaro.org>
>
> Apparently that's now mturque...@baylibre.com .
Thanks. Will change.
>
>> CC: Sebastian Hesselbarth <sebastian.hesselba...@gmail.com>
>> CC: Guenter Roeck <li...@roeck-us.net>
>> CC: Andrey Filippov <and...@elphel.com>
>
>> --- a/drivers/clk/Kconfig
>> +++ b/drivers/clk/Kconfig
>
>> config COMMON_CLK
>> - bool
>> + tristate "Common Clock"
>> select HAVE_CLK_PREPARE
>> select CLKDEV_LOOKUP
>> select SRCU
>
> Why? The commit explanation doesn't mention this. Did you use an unclean
> tree? If not, you just created over a dozen of new modules:
Thanks for catching this. I was testing building the driver within and outside
of kernel tree for another kernel version. If this driver is built-in, I don't
need to make it tristate. Will revert in next version.
> $ git grep -nw CONFIG_COMMON_CLK -- "*Makefile*"
> arch/arm/mach-mmp/Makefile:13:ifeq ($(CONFIG_COMMON_CLK), )
> arch/arm/mach-shmobile/Makefile:21:ifndef CONFIG_COMMON_CLK
> arch/powerpc/platforms/512x/Makefile:4:obj-$(CONFIG_COMMON_CLK) +=
> clock-commonclk.o
> drivers/clk/Makefile:4:obj-$(CONFIG_COMMON_CLK) += clk.o
> drivers/clk/Makefile:5:obj-$(CONFIG_COMMON_CLK) += clk-divider.o
> drivers/clk/Makefile:6:obj-$(CONFIG_COMMON_CLK) += clk-fixed-factor.o
> drivers/clk/Makefile:7:obj-$(CONFIG_COMMON_CLK) += clk-fixed-rate.o
> drivers/clk/Makefile:8:obj-$(CONFIG_COMMON_CLK) += clk-gate.o
> drivers/clk/Makefile:9:obj-$(CONFIG_COMMON_CLK) += clk-mux.o
> drivers/clk/Makefile:10:obj-$(CONFIG_COMMON_CLK) += clk-composite.o
> drivers/clk/Makefile:11:obj-$(CONFIG_COMMON_CLK) +=
> clk-fractional-divider.o
> drivers/clk/Makefile:12:obj-$(CONFIG_COMMON_CLK) += clk-gpio-gate.o
> drivers/clk/Makefile:14:obj-$(CONFIG_COMMON_CLK) += clk-conf.o
> drivers/clk/Makefile:59:ifeq ($(CONFIG_COMMON_CLK), y)
> drivers/clk/samsung/Makefile:5:obj-$(CONFIG_COMMON_CLK) += clk.o clk-pll.o
> drivers/gpu/drm/msm/Makefile:53:msm-$(CONFIG_COMMON_CLK) +=
> mdp/mdp4/mdp4_lvds_pll.o
> drivers/sh/Makefile:5:ifneq ($(CONFIG_COMMON_CLK),y)
>
>> +config COMMON_CLK_SI5338
>> + tristate "Clock driver for SiLabs 5338"
>> + depends on I2C
>> + select REGMAP_I2C
>> + select RATIONAL
>> + ---help---
>> + This driver supports Silicon Labs 5338 programmable clock generators,
>> + using common clock framework. It needs parent clock as input(s).
>> + Internal clocks are registered with unique names in case multiple
>> + devices exist. See devicetree/bindings/clock/silabs,si5338.txt
>> + under Documentation for details.
>
>> --- /dev/null
>> +++ b/drivers/clk/clk-si5338.c
>
>> +unsigned long si5338_divrefclk_recalc_rate(struct clk_hw *hw,
>> + unsigned long parent_rate)
>> +{
>> + [...]
>> +}
>
> Can't this be made static? It compiles cleanly with static too. Is there
> some subtle issue I'm missing?
>
Absolutely. I must have missed them for some functions.
>> +static const struct clk_ops si5338_divrefclk_ops = {
>> + .recalc_rate = si5338_divrefclk_recalc_rate,
>> +};
>
>> +unsigned long si5338_divfbclk_recalc_rate(struct clk_hw *hw,
>> + unsigned long parent_rate)
>> +{
>> + [...]
>> +}
>
> Ditto.
>
>> +static const struct clk_ops si5338_divfbclk_ops = {
>> + .recalc_rate = si5338_divfbclk_recalc_rate,
>> +};
>
>> --- /dev/null
>> +++ b/include/dt-bindings/clock/clk-si5338.h
>
>> +#ifndef _DT_BINDINGS_CLK_DSI5338_H
>> +#define _DT_BINDINGS_CLK_DSI5338_H
>
> (I spotted a D that looks odd here.)
Me, too. It takes fresh eyes to spot this non-sense error.
>
> And git am whines:
> new blank line at EOF.
Thanks.
York
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